The disaster recovery solution can provide customers with a full range of business continuity guarantees, and provides three disaster recovery modes: night light, temperature backup, and multi-site to ensure that customers can quickly resume business operations and reduce losses in the face of various emergencies. The solution uses elastic resources in the cloud, usually maintains disaster recovery replication at low cost, quickly expands capacity to full production capacity during disasters, supports RPO per second and minute RTO, reduces data loss, and shortens business interruption time. Build the same application system as the production environment at the backup site. Use synchronous or asynchronous replication technology to ensure that key applications resume operation within the permitted time frame and ensure business continuity. This disaster recovery solution can meet the high requirements of customers for business continuity, can effectively resist emergencies such as natural disasters and technical failures, and help enterprises build robust IT systems.